题目内容
（请给出正确答案）
[主观题]
In the word" books, bags, boxes", the plural morpheme {-s} is realized by/s/,/z/,/iz/in ph
onetic point of view, thus we can call/s/,/z/,/iz/the
A．morphs.
B．allomorphs.
C．morphemes.
D．morphology.
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桃树的丰产树形是()。
A.开心形
B.杯状形
C.圆头形
D.塔形
